Event ID - 8534

Event Id8534
SourceMSExchangeIS Mailbox Store
DescriptionA problem occurred while getting the properties for Copy/Move rule for Test User. Error code: -2147221233. Try to clear the rules or run ISINTEG to check for any problem in the database "First Storage Group\Mailbox Store (BUG241341)".
Event InformationAccording to Microsoft:
CAUSE:
This problem may occur if both of the following conditions are true:
1. You used the Microsoft Exchange Mailbox Merge program (Exmerge.exe) to migrate data from Microsoft Exchange Server 5.5 mailboxes in a different Exchange organization.
2. During the Exmerge.exe process, you selected the option to extract associated folder messages from the source information store and to import those messages to the target information store. For example, in the Source Server dialog box, you clicked Options, and then you clicked to select the Associated folder messages check box on the Data tab.
WORKAROUND:
To work around this problem, try to remove the copy rules or move rules from the mailbox before you move that mailbox. Additionally, run the ISINTEG against the mailbox store to determine if any problems exist in the database.
Reference LinksError code 0x80040301 appears when you try to move a mailbox in Exchange Server 2003

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